Grand Teton is open 24 hours, every day of the year. Early fall is still a busy time at the park, but by late fall services at Grand Teton begin to close.
Grand Teton in Sept: highs 50-60s / lows 20-30s FGrand Teton in Oct: highs around 52 / lows mid 20s FGrand Teton in Nov: highs around 35 / lows in the teens F
The Grand Teton Lakeshore Trail begins on the backside of the Colter Bay Visitor Center. The hike is two connecting loops that circle the inner and outer portions of Colter Bay Peninsula.
There is a paved path from the parking lot to the Jenny Lake boat dock to access the loop trail. Jenny Lake Loop can be hiked in either direction. You may hike it clockwise to catch the morning light on the Grand Tetons.